參數資料
型號： KSZ8842-16MQL-EVAL
廠商： Micrel Inc
文件頁數： 83/141頁
文件大?。?/td> 0K
描述： BOARD EVALUATION KSZ8842-16MQL
標準包裝： 1
主要目的： 接口，以太網控制器（PHY 和 MAC）
嵌入式： 否
已用 IC / 零件： KSZ8842-16MQL
主要屬性： 2 個端口，100BASE-TX/10BASE-T，管理型
次要屬性： 8/16 位接口，LinkMD 線纜診斷
已供物品： 板，CD，文檔，電源
產品目錄頁面： 1114 (CN2011-ZH PDF)
相關產品： 576-3076-ND - IC MAC CTLR 2PORT ETH 100-LFBGA
KSZ8842-32MQLA6-ND - IC SWITCH 10/100 32BIT 128PQFP
576-1479-ND - IC SWITCH 10/100 32BIT 128PQFP
576-1478-5-ND - IC SWITCH 10/100 16BIT 128PQFP
其它名稱： 576-1634
Micrel, Inc.
KSZ8842-16/32 MQL/MVL/MVLI/MBL
October 2007
46
M9999-102207-1.9
DA found in
Static MAC
Table?
Use FID flag?
FID match?
DA+FID found in
Dynamic MAC
Table?
Action
No
Don’t care
No
Broadcast to the membership ports
defined in the VLAN Table bits [18:16]
No
Don’t care
Yes
Send to the destination port defined in the
Dynamic MAC Address Table bits [53:52]
Yes
0
Don’t care
Send to the destination port(s) defined in
the Static MAC Address Table bits [50:48]
Yes
1
No
Broadcast to the membership ports
defined in the VLAN Table bits [18:16]
Yes
1
No
Yes
Send to the destination port defined in the
Dynamic MAC Address Table bits [53:52]
Yes
1
Yes
Don’t care
Send to the destination port(s) defined in
the Static MAC Address Table bits [50:48]
Table 10. FID+DA Lookup in VLAN Mode
FID+SA found in Dynamic
MAC Table?
Action
No
Learn and add FID+SA to the Dynamic MAC Address Table
Yes
Update time stamp
Table 11. FID+SA Lookup in VLAN Mode
QoS Priority Support
The KSZ8842M provides Quality of Service (QoS) for applications such as VoIP and video conferencing. Offering four
priority queues per port, the per-port transmit queue can be split into four priority queues: Queue 3 is the highest priority
queue and Queue 0 is the lowest priority queue. Bit 0 of registers P1CR1, P2CR1, and P3CR1 is used to enable split
transmit queues for ports 1, 2, and the host port, respectively.
Port-Based Priority
With port-based priority, each ingress port is individually classified as a high-priority receiving port. All packets received at
the high-priority receiving port are marked as high priority and are sent to the high-priority transmit queue if the
corresponding transmit queue is split. Bit 4 and 3 of registers P1CR1, P2CR1, and P3CR1 is used to enable port-based
priority for ports 1, 2, and the host port, respectively.
802.1p-Based Priority
For 802.1p-based priority, the KSZ8842M examines the ingress (incoming) packets to determine whether they are tagged.
If tagged, the 3-bit priority field in the VLAN tag is retrieved and compared against the “priority mapping” value, as
specified by the register SGCR6. The “priority mapping” value is programmable.
Figure 14 illustrates how the 802.1p priority field is embedded in the 802.1Q VLAN tag.
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相關代理商/技術參數
參數描述
KSZ8842-16MVL 功能描述:以太網 IC 2-Port Ethernet Switch/Repeater + Generic (8, 16-bit) bus interface(Lead Free) RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數量:2 數據速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
KSZ8842-16MVL TR 功能描述:以太網 IC 2-Port Ethernet Switch/Repeater + Generic (8, 16-bit) bus interface(Lead Free) RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數量:2 數據速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
KSZ8842-16MVL-EVAL 功能描述:BOARD EVALUATION KSZ8842-16MVL RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態(tài) LED 已供物品:板
KSZ8842-16MVLI 功能描述:以太網 IC 2-Port Ethernet Switch/Repeater + Generic (8, 16-bit) bus interface(Lead Free) RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數量:2 數據速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
KSZ8842-16MVLI TR 功能描述:以太網 IC 2-Port Ethernet Switch/Repeater + Generic (8, 16-bit) bus interface(Lead Free) RoHS:否 制造商:Micrel 產品:Ethernet Switches 收發(fā)器數量:2 數據速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray
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